OnGuard Bulldog U-Lock

Unlike standard U-locks that only lock on one side, the X2P system secures both sides of the shackle into the crossbar. This design significantly increases resistance to leverage attacks and twisting attempts, making it much harder for thieves to pry the lock open.

The 13mm hardened steel shackle is a standard thickness for high-security locks. While it is robust, it should easily fit through most bike frames and standard city bike racks, though you may need to position your bike carefully if the rack is particularly crowded.

The Snap Lock Quick Mount bracket is designed to be versatile and fits most standard bicycle frame tubing. However, if you have an unusually shaped frame or a very thick e-bike frame, you might find it difficult to secure the mount properly.

These bumpers are small rubberized additions that prevent the U-lock from clanking against your bike frame while you ride. They keep your commute quiet and help protect your bike's paint finish from scratches caused by the metal lock.

OnGuard provides a $501 anti-theft protection offer, which acts as a limited warranty if your bike is stolen due to the lock being defeated. To be eligible, you must register your lock with OnGuard immediately after purchase and follow their specific claim requirements.

Yes, the set comes with five laser-cut keys, one of which includes a built-in micro-light. This makes it much easier to locate the keyhole and unlock your bike in low-light conditions without fumbling.